I use the flat tappet version of that cam and love it. It's what I'd use were I to do another motor for myself. I use the entire Edelbrock valve train. 18k miles and no probems.

VTP= valve to piston clearance.

I use Innovate Motorsports AFR and software. It's good but there are many others. I like this one as it is real time and very fast and plays into a laptop pretty easily. they hve more extensive data recording too. More expensive too.

as I said, idle is important to maneuver in the harbor
and for low speed through the small rivers and from 3.000 rpm
to max. 5.500-5.700 rpm for high speed.
Higher LSA = better idle (during larger vacuum)?

The only thing that will brake a cast piston ( or any piston) is detonation-preignition from excessive boost and lean jetting and excessive timing and garbage fuel. Cast pistons are no problem, incorrect tuneup is the problem.

?

This is true but the forged pistons are more forgiving. It would be foolish to build a blower motor and intentionally put in cast pistons was my point.
With a blower engine it is all about the tune up for sure.

__________________
Artificial Intelligence is no match for Natural Stupidity

Also did you get a new oil pump and pump shaft. I noticed it wasnt on the list.

If going roller cam be sure to use a rev kit. doesnt cost much but could be the difference between a tow home and motoring back to sure on your own. They say you can toss a push rod out and still run the motor for a short time with one installed. Very handy when you cant call AAA for a rollback. But have only used one once.

Engine should only be bored with the pistons in hand. Each cylinder should be matched to the piston. But alot of machine shops will just bore it if you ask.

That being said piston to wall clearence should be within factory specs for most blower applications. But i am not a FI expert. bore should be 4.030 pistons will be smaller until they heat up. Size for a piston is measured at the skirt. not the head or ring lands. so .030 pistons will actually be a little smaller when they heat up they will be at the corect size. So the clearance is added to allow the engine to still run once its hot.

Register Now

In order to be able to post messages on the Hot Rod Forum : Hotrodders Bulletin Board forums, you must first register.
Please enter your desired user name (usually not your first and last name), your email address and other required details in the form below.

User Name:

Password

Please enter a password for your user account. Note that passwords are case-sensitive.

Password:

Confirm Password:

Email Address

Please enter a valid email address for yourself.

Email Address:

Insurance

Please select your insurance company (Optional)

Log-in

User Name

Remember Me?

Password

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.